The Senegalese international, who had been linked to West Ham, Newcastle and Crystal Palace, joins the Istanbul club on a four year deal for a fee believed to be around 7.5 million Euros.

Gala also seem confident of securing the signing of the Iron’s Algerian winger Sofiane Feghouli in the coming days, despite the player himself still being involved in club training and receiving treatment for a knock.

Despite pre-season suggesting West Ham need improvements all over the pitch, particularly in midfield, the rumour mill has gone quiet regarding the club.

With one strong target joining another club, it puts doubt on whether or not the club will have any new faces before the 13th August showdown at Manchester United.